NL8601021A - PROGRAMMABLE RESPONDER. - Google Patents
PROGRAMMABLE RESPONDER. Download PDFInfo
- Publication number
- NL8601021A NL8601021A NL8601021A NL8601021A NL8601021A NL 8601021 A NL8601021 A NL 8601021A NL 8601021 A NL8601021 A NL 8601021A NL 8601021 A NL8601021 A NL 8601021A NL 8601021 A NL8601021 A NL 8601021A
- Authority
- NL
- Netherlands
- Prior art keywords
- detection plate
- adjustable
- transmitter
- responder
- codes
- Prior art date
Links
- 238000001514 detection method Methods 0.000 claims abstract description 29
- 230000005540 biological transmission Effects 0.000 claims description 23
- 238000010521 absorption reaction Methods 0.000 claims description 5
- 239000000126 substance Substances 0.000 claims description 2
- 238000000034 method Methods 0.000 claims 1
- 230000001681 protective effect Effects 0.000 claims 1
- 230000033764 rhythmic process Effects 0.000 abstract description 2
- 238000004519 manufacturing process Methods 0.000 description 5
- 239000003990 capacitor Substances 0.000 description 3
- 230000005672 electromagnetic field Effects 0.000 description 3
- 238000010586 diagram Methods 0.000 description 2
- 241001465754 Metazoa Species 0.000 description 1
- 230000036772 blood pressure Effects 0.000 description 1
- 230000006870 function Effects 0.000 description 1
- 238000007689 inspection Methods 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 230000008672 reprogramming Effects 0.000 description 1
Classifications
-
- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06K—GRAPHICAL DATA READING; PRESENTATION OF DATA; RECORD CARRIERS; HANDLING RECORD CARRIERS
- G06K7/00—Methods or arrangements for sensing record carriers, e.g. for reading patterns
- G06K7/10—Methods or arrangements for sensing record carriers, e.g. for reading patterns by electromagnetic radiation, e.g. optical sensing; by corpuscular radiation
- G06K7/10009—Methods or arrangements for sensing record carriers, e.g. for reading patterns by electromagnetic radiation, e.g. optical sensing; by corpuscular radiation sensing by radiation using wavelengths larger than 0.1 mm, e.g. radio-waves or microwaves
- G06K7/10019—Methods or arrangements for sensing record carriers, e.g. for reading patterns by electromagnetic radiation, e.g. optical sensing; by corpuscular radiation sensing by radiation using wavelengths larger than 0.1 mm, e.g. radio-waves or microwaves resolving collision on the communication channels between simultaneously or concurrently interrogated record carriers.
- G06K7/10029—Methods or arrangements for sensing record carriers, e.g. for reading patterns by electromagnetic radiation, e.g. optical sensing; by corpuscular radiation sensing by radiation using wavelengths larger than 0.1 mm, e.g. radio-waves or microwaves resolving collision on the communication channels between simultaneously or concurrently interrogated record carriers. the collision being resolved in the time domain, e.g. using binary tree search or RFID responses allocated to a random time slot
- G06K7/10039—Methods or arrangements for sensing record carriers, e.g. for reading patterns by electromagnetic radiation, e.g. optical sensing; by corpuscular radiation sensing by radiation using wavelengths larger than 0.1 mm, e.g. radio-waves or microwaves resolving collision on the communication channels between simultaneously or concurrently interrogated record carriers. the collision being resolved in the time domain, e.g. using binary tree search or RFID responses allocated to a random time slot interrogator driven, i.e. synchronous
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B61—RAILWAYS
- B61L—GUIDING RAILWAY TRAFFIC; ENSURING THE SAFETY OF RAILWAY TRAFFIC
- B61L25/00—Recording or indicating positions or identities of vehicles or trains or setting of track apparatus
- B61L25/02—Indicating or recording positions or identities of vehicles or trains
- B61L25/04—Indicating or recording train identities
- B61L25/043—Indicating or recording train identities using inductive tags
-
- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06K—GRAPHICAL DATA READING; PRESENTATION OF DATA; RECORD CARRIERS; HANDLING RECORD CARRIERS
- G06K19/00—Record carriers for use with machines and with at least a part designed to carry digital markings
- G06K19/06—Record carriers for use with machines and with at least a part designed to carry digital markings characterised by the kind of the digital marking, e.g. shape, nature, code
- G06K19/067—Record carriers with conductive marks, printed circuits or semiconductor circuit elements, e.g. credit or identity cards also with resonating or responding marks without active components
- G06K19/07—Record carriers with conductive marks, printed circuits or semiconductor circuit elements, e.g. credit or identity cards also with resonating or responding marks without active components with integrated circuit chips
- G06K19/0723—Record carriers with conductive marks, printed circuits or semiconductor circuit elements, e.g. credit or identity cards also with resonating or responding marks without active components with integrated circuit chips the record carrier comprising an arrangement for non-contact communication, e.g. wireless communication circuits on transponder cards, non-contact smart cards or RFIDs
-
- G—PHYSICS
- G07—CHECKING-DEVICES
- G07C—TIME OR ATTENDANCE REGISTERS; REGISTERING OR INDICATING THE WORKING OF MACHINES; GENERATING RANDOM NUMBERS; VOTING OR LOTTERY APPARATUS; ARRANGEMENTS, SYSTEMS OR APPARATUS FOR CHECKING NOT PROVIDED FOR ELSEWHERE
- G07C9/00—Individual registration on entry or exit
- G07C9/20—Individual registration on entry or exit involving the use of a pass
- G07C9/28—Individual registration on entry or exit involving the use of a pass the pass enabling tracking or indicating presence
Landscapes
- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Theoretical Computer Science (AREA)
- Computer Networks & Wireless Communication (AREA)
- Toxicology (AREA)
- Health & Medical Sciences (AREA)
- Computer Hardware Design (AREA)
- Artificial Intelligence (AREA)
- Computer Vision & Pattern Recognition (AREA)
- General Health & Medical Sciences (AREA)
- Mechanical Engineering (AREA)
- Electromagnetism (AREA)
- Microelectronics & Electronic Packaging (AREA)
- Near-Field Transmission Systems (AREA)
- Iron Core Of Rotating Electric Machines (AREA)
- Cash Registers Or Receiving Machines (AREA)
- Developing Agents For Electrophotography (AREA)
- Burglar Alarm Systems (AREA)
- Digital Transmission Methods That Use Modulated Carrier Waves (AREA)
- Radar Systems Or Details Thereof (AREA)
Abstract
Description
ί * PROGRAMMEERBARE RESPONDER.ί * PROGRAMMABLE RESPONDER.
De uitvinding betreft een programmeerbaar detektieplaatje of responder, voor een elektromagnetisch detectiestelsel.The invention relates to a programmable detection plate or responder, for an electromagnetic detection system.
Een dergelijke responder, die gebruikt wordt voor het detecteren van personen, dieren of goederen, alsmede voor het markeren van 5 locaties, transportwegen of moeilijk toegankelijke installaties, is bijvoorbeeld bekend uit de ter inzage gelegde Nederlandse octrooiaanvrage 7711891 van aanvraagster.Such a responder, which is used for detecting persons, animals or goods, as well as for marking locations, transport routes or installations that are difficult to access, is known, for example, from the Applicant's Netherlands Patent Application 7711891 laid open to public inspection.
De overdracht van informatie, in de vorm van een gecodeerd nummer of in de vorm van gecodeerde tekst, vindt plaats door middel van 10 modulatie van de veldabsorptie van het elektromagnetische veld, zoals bekend uit het Amerikaanse octrooi 3.299.424 van Vinding en het Engelse octrooi 1577920 van aanvraagster.The transmission of information, in the form of an encoded number or in the form of encoded text, takes place by means of modulation of the field absorption of the electromagnetic field, as known from the American patent 3,299,424 of the invention and the English patent. 1577920 of the applicant.
Een bezwaar van dergelijke responders is, dat de erin vastgelegde informatie van te voren tijdens het produktieproees moet worden 15 aangebracht en dat deze informatie naderhand niet kan worden gewijzigd. Door onvermijdelijke uitval tijdens het produktieproees ontstaan "gaten1’ in de codereeks waardoor omvangrijke logistieke problemen optreden, ter opvulling van de ontstane "gaten" in de reeks.A drawback of such responders is that the information contained therein must be provided in advance during the production test and that this information cannot be changed afterwards. Inevitable outages during the production test lead to "holes1" in the code series, causing major logistical problems, to fill the "holes" in the series.
20 Aanvraagster heeft door middel van de Nederlandse octrooiaanvrage 8203092 en de hiermee samenhangende Europese aanvrage 83201143.1 getracht de genoemde problemen te ondervangen, door het realiseren van de mogelijkheid tot programmering van de responders na afloop van het produktieproees. Hiertoe werd een tweede resonantiekring 25 aangebracht, om de responder na afloop van het produktieproees draadloos, langs elektromagnetische weg, te kunnen programmeren.The applicant has tried by means of Dutch patent application 8203092 and the related European application 83201143.1 to overcome the above-mentioned problems, by realizing the possibility of programming the responders after the production test. For this purpose, a second resonant circuit 25 was provided in order to be able to program the responder wirelessly, by electromagnetic means, after the production test.
De onderhavige uitvinding beoogt, via één enkel overdrachtskanaal, bijvoorbeeld een elektromagnetische resonantiekring, of een breedbandige niet afgestemde kring, de funkties van zowel de 30 responder, die een gecodeerd signaal opwekt, alsmede de mogelijkheid tot draadloze programmering en herprogrammering na afloop van het produktieproees, te combineren.The present invention contemplates, through a single transmission channel, for example an electromagnetic resonant circuit, or a broadband tuned circuit, the functions of both the 30 responder, which generates an encoded signal, as well as the possibility of wireless programming and reprogramming after the production test, to combine.
Hierdoor ontstaat een responder, waarin continue variabele data kan worden opgeslagen.This creates a responder in which continuously variable data can be stored.
35 Deze data kan afkomstig zijn van een tot het systeem behorende zender, doch ook bestaan uit data afkomstig van een of meerdere aan de responder gekoppelde sensoren, voor het opnemen van bijvoorbeeld fysische of (bio-)chemische parameters, zoals bijvoorbeeld temperatuur, druk, hartslag, bloeddruk, oogdruk en 40 concentraties van elektroiieten.This data may come from a transmitter belonging to the system, but it may also consist of data from one or more sensors coupled to the responder, for recording, for example, physical or (bio) chemical parameters, such as, for example, temperature, pressure, heart rate, blood pressure, eye pressure and 40 concentrations of electroites.
Ter verkrijging van een optimale code integriteit is een voorziening getroffen, om herprogrammering van alle, of een gedeelte van de geprogrammeerde data onmogelijk te maken.Provision has been made to obtain optimal code integrity to make it impossible to reprogram all or part of the programmed data.
Dit kan worden gedaan, door bijvoorbeeld een gedeelte van het 45 geheugen te gebruiken om aan te geven, of in dit gedeelte en/of een ander gedeelte van het geheugen data gewijzigd mag worden.This can be done, for example, by using a portion of the memory to indicate whether data may be modified in this portion and / or another portion of the memory.
C * Λ * Λ rt 4 £ V V : Q s 1 -1- £ ^C * Λ * Λ rt 4 £ V V: Q s 1 -1- £ ^
Aangezien de voeding van de responder in plaats van uit een batterij, ook kan worden verkregen uit het elektromagnetische veld van de zender, waarbij deze voeding dus niet altijd aanwezig is, bestaan de geheugencellen uit zogenaamde "floating gates", 5 waarin de gecodeerde informatie bewaard blijft onafhankelijk van een voedingsbron.Since the power supply of the responder instead of a battery can also be obtained from the electromagnetic field of the transmitter, so this power supply is not always present, the memory cells consist of so-called "floating gates", 5 in which the encoded information is stored. remains independent of a power source.
Verder omvat de uitvinding een voorziening in de schakeling, waardoor de normaal passieve responder, bij het wegvallen van het elektromagnetische veld van de zender, actief wordt en gedurende 10 een bepaalde tijd gaat zenden op de zelfde frequentie als die van de zender en dus ook van het overdrachtskanaal in de vorm van bijvoorbeeld een afgestemde elektromagnetische resonantiekring, of een niet afgestemde breedbandige kring, in de responder zelf.The invention furthermore comprises a provision in the circuit, whereby the normally passive responder, when the transmitter's electromagnetic field is lost, becomes active and transmits for a certain time at the same frequency as that of the transmitter and thus also of the transmission channel in the form of, for example, a tuned electromagnetic resonant circuit, or an un-tuned broadband circuit, in the responder itself.
De tijd van het actief zijn van de responder kan bijvoorbeeld 15 worden bepaald door het uitgeput raken van de energiebron, bijvoorbeeld in de vorm van een condensator, die tijdens het verblijf in het zendveld van de zender werd opgeladen, of door een in de schakeling geprogrammeerde tijd in het geval, dat gebruik gemaakt wordt van een aanvullende energiebron, bijvoorbeeld in de 20 vorm van een batterij.The time of the responder being active can be determined, for example, by the energy source becoming depleted, for example in the form of a capacitor, which was charged during its stay in the transmitter's transmission field, or by a circuit programmed in the circuit. time in the event that an additional energy source is used, for example in the form of a battery.
In het volgende zal de uitvinding nader worden beschreven en aan de hand van figuren worden verduidelijkt.The invention will be described in more detail below and will be elucidated with reference to figures.
Figuur 1 geeft het blokschema van een bekende responder, waarbij de overdracht van informatie naar de zend/ontvanger plaats vindt 25 door middel van modulatie van de veldabsorptie. Hiertoe wordt in een door de gecodeerde informatie bepaald ritme de afgestemde elektromagnetische resonantiekring extra belast door deze kring via een weerstand kort te sluiten. Om te voorkomen, dat de responder wordt verstoken van haar energievoorziening, geschiedt 30 de informatieoverdracht niet continue doch in achtereenvolgende tijdzones.Figure 1 shows the block diagram of a known responder, in which the transfer of information to the transceiver takes place by means of modulation of the field absorption. To this end, the tuned electromagnetic resonant circuit is additionally loaded in a rhythm determined by the coded information by shorting this circuit via a resistor. In order to prevent the responder from being deprived of its energy supply, the information transfer does not take place continuously but in successive time zones.
In de tijdzone, waarin geen informatie wordt overgedragen, kan de lading van een energiebuffer, bijvoorbeeld een condensator, weer op peil worden gebracht, omdat tijdens het kortsluiten van 35 de resonantiekring geen energie van de zender meer beschikbaar is voor de energievoorziening van de responder.In the time zone, in which no information is transferred, the charge of an energy buffer, for example a capacitor, can be brought up to standard again, because during the short-circuiting of the resonant circuit no energy from the transmitter is available for the energy supply of the responder.
De uitvinding voorziet in een mogelijkheid om in de tijdzone waarin geen informatie van de responder wordt overgedragen naar de zend/ontvanger, informatie over te dragen van de zender naar de 40 responder, die dan in de responder kan worden verwerkt of opgeslagen. Hiertoe wordt gebruik gemaakt van de zenerspanning van een zenerdiode, die ter beveiliging van het elektronische circuit in de responder is opgenomen.The invention provides a possibility in the time zone in which no information is transferred from the responder to the transceiver, to transfer information from the transmitter to the responder, which can then be processed or stored in the responder. The zener voltage of a zener diode, which is included in the responder to protect the electronic circuit, is used for this purpose.
Door nu de zendenergie van de zender te laten variëren, kan door 45 de plotselinge toename van de door de responder geabsorbeerde energie, indien de spanning over de buffercondensator en de zenerdiode de zenerspanning bereikt, worden vastgesteld, bij welke zendenergie deze maximale spanning in de responder wordt bereikt.By now varying the transmitter energy of the transmitter, the sudden increase of the energy absorbed by the responder, if the voltage across the buffer capacitor and the zener diode reaches the zener voltage, can be determined by 45, at which transmitter energy this maximum voltage in the responder is reached.
8 -3 δ 13 2 1 -2- * · φ' ·»8 -3 δ 13 2 1 -2- * · φ '· »
Vervolgens wordt de naar de responder over te dragen informatie op het zendsignaal gemoduleerd, door vanaf de op voornoemde wijze vastgestelde maximale zendenergie een modulatiediepte van bijvoorbeeld 50% aan te houden, zodanig dat op het laagste niveau 5 nog voldoende energie aan de responder wordt toegevoerd om hieruit de kloksignalen voor de schakeling te betrekken. Hiermee is bereikt, dat in de tijdzone, waarin geen informatie van de responder naar de zend/ontvanger wordt gezonden, behalve de voeding van de electrische schakeling in de responder, ook een 10 gecodeerd signaal van de zender naar de responder kan worden overgedragen.Subsequently, the information to be transferred to the responder is modulated on the transmission signal, by maintaining a modulation depth of, for example, 50% from the maximum transmission energy determined in the aforementioned manner, such that at the lowest level 5 sufficient energy is still supplied to the responder. to derive the clock signals for the circuit therefrom. This achieves that in the time zone in which no information is sent from the responder to the transceiver, except for the power supply of the electrical circuit in the responder, a coded signal can also be transferred from the transmitter to the responder.
Figuur 2 toont een schematische weergave van de schakeling waarmee dit kan worden gerealiseerd.Figure 2 shows a schematic representation of the circuit with which this can be realized.
Figuur 3a toont een tijddiagram waarin het blokvormige signaal op 15 de spoel van de responder wordt weergegeven bij uitlezing en figuur 3b bij zowel uitlezen als coderen van de responder.Figure 3a shows a time diagram in which the block-shaped signal is shown on the coil of the responder during reading and Figure 3b during both reading and coding of the responder.
Behalve door middel van detektie van de veldabsorptie bij de zender, kan de overdracht van de gecodeerde informatie vanuit de responder ook plaats vinden, door in de tijdzones, waarin deze 20 overdracht moet plaats vinden, niet te zenden doch om te schakelen op ontvangst en wel bij dezelfde frequentie.Except by means of detection of the field absorption at the transmitter, the transmission of the coded information from the responder can also take place by not transmitting in the time zones in which this transmission is to take place, but switching to reception, namely at the same frequency.
Hiertoe kan de spoel of antenne van de zender, in voornoemde tijdzones, worden omgeschakeld naar een ontvanger. Ook kan natuurlijk gebruik gemaakt worden van een ontvanger met een 25 eigen spoel of antenne.For this purpose, the coil or antenna of the transmitter, in the aforementioned time zones, can be switched to a receiver. Of course, use can also be made of a receiver with its own coil or antenna.
Om deze vorm van overdracht, die het voordeel heeft, dat zij minder gevoelig is voor veldverstoring door bijvoorbeeld de aanwezigheid van metaal, mogelijk te maken, moet de elektrische schakeling in de responder in de tijdzones waarin geen zender-30 signaal aanwezig is, zelf voor het overdrachtssignaal met de juiste frequentie zorgen. Afhankelijk van de hoeveelheid energie in de energiebuffer, kan dit ook meerdere tijdzones omvatten.To enable this form of transmission, which has the advantage of being less sensitive to field disturbance, for example due to the presence of metal, the electrical circuit in the responder in the time zones in which no transmitter-30 signal is present must itself be ensure the transmission signal with the correct frequency. Depending on the amount of energy in the energy buffer, this can also include multiple time zones.
De uitvinding omvat een schakeling, waarbij de resonantiekring van de responder is verbonden met een versterker schakeling, 35 zodanig dat bij ontvangst van een zendsignaal van de zender deze schakeling passief de fase van het aangeboden zendsignaal volgt, doch bij het wegvallen van het zendveld van de zender actief gaat osscileren op dezelfde frequentie.The invention comprises a circuit in which the resonant circuit of the responder is connected to an amplifier circuit, such that upon receipt of a transmission signal from the transmitter, this circuit passively follows the phase of the transmitted transmission signal, but when the transmission field of the transmitter is lost. transmitter is active to oscillate on the same frequency.
De overdracht van de gecodeerde informatie vanuit de responder 40 naar de zend/ontvanger kan dan op dezelfde wijze plaats vinden als bij overdracht via modulatie van de veldabsorptie, namelijk door het moduleren van de belasting van de resonantiekring in de responder. Ook zou ter besparing van energie een inhibitlijn in de versterker kunnen worden aangebracht, door deze bijvoorbeeld 45 als een zogenaamde "NAND"-poort uit te voeren. Dit laatste is vooral van belang, indien ter vergroting van de detectieafstand een batterij toegevoegd wordt.The transmission of the coded information from the responder 40 to the transceiver can then take place in the same manner as with transmission via modulation of the field absorption, namely by modulating the load of the resonant circuit in the responder. An inhibit line could also be provided in the amplifier to save energy, for example by designing it as a so-called "NAND" gate. The latter is especially important if a battery is added to increase the detection distance.
figuur 4 toont een schematische weergave van deze schakeling.Figure 4 shows a schematic representation of this circuit.
g" ' '-1 Ί v ** - * · -3-g "'' -1 Ί v ** - * · -3-
Claims (7)
Priority Applications (14)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
NL8601021A NL8601021A (en) | 1986-04-22 | 1986-04-22 | PROGRAMMABLE RESPONDER. |
EP87200633A EP0242906B1 (en) | 1986-04-22 | 1987-04-21 | Electromagnetic identification system |
NO871647A NO871647L (en) | 1986-04-22 | 1987-04-21 | ELECTROMAGNETIC IDENTIFICATION SYSTEM. |
DE8787200633T DE3774473D1 (en) | 1986-04-22 | 1987-04-21 | ELECTROMAGNETIC IDENTIFICATION SYSTEM. |
ES198787200633T ES2027276T3 (en) | 1986-04-22 | 1987-04-21 | AN ELECTROMAGNETIC IDENTIFICATION SYSTEM. |
AT87200633T ATE69517T1 (en) | 1986-04-22 | 1987-04-21 | ELECTROMAGNETIC IDENTIFICATION SYSTEM. |
DK205387A DK205387A (en) | 1986-04-22 | 1987-04-22 | ELECTROMAGNETIC IDENTIFICATION SYSTEM |
IL82299A IL82299A0 (en) | 1986-04-22 | 1987-04-22 | Electromagnetic identification system |
AU71855/87A AU589765B2 (en) | 1986-04-22 | 1987-04-22 | Electromagnetic identification system |
JP62099605A JPH0691484B2 (en) | 1986-04-22 | 1987-04-22 | Electromagnetic identification responder |
NZ220034A NZ220034A (en) | 1986-04-22 | 1987-04-22 | Remotely programmable identification transponder |
CA000535272A CA1290841C (en) | 1986-04-22 | 1987-04-22 | Electromagnetic identification system |
US07/566,830 US5105190A (en) | 1986-04-22 | 1990-08-14 | Electromagnetic identification system |
JP4360878A JPH0761032B2 (en) | 1986-04-22 | 1992-12-29 | Electromagnetic identification device |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
NL8601021A NL8601021A (en) | 1986-04-22 | 1986-04-22 | PROGRAMMABLE RESPONDER. |
NL8601021 | 1986-04-22 |
Publications (1)
Publication Number | Publication Date |
---|---|
NL8601021A true NL8601021A (en) | 1987-11-16 |
Family
ID=19847916
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
NL8601021A NL8601021A (en) | 1986-04-22 | 1986-04-22 | PROGRAMMABLE RESPONDER. |
Country Status (13)
Country | Link |
---|---|
US (1) | US5105190A (en) |
EP (1) | EP0242906B1 (en) |
JP (2) | JPH0691484B2 (en) |
AT (1) | ATE69517T1 (en) |
AU (1) | AU589765B2 (en) |
CA (1) | CA1290841C (en) |
DE (1) | DE3774473D1 (en) |
DK (1) | DK205387A (en) |
ES (1) | ES2027276T3 (en) |
IL (1) | IL82299A0 (en) |
NL (1) | NL8601021A (en) |
NO (1) | NO871647L (en) |
NZ (1) | NZ220034A (en) |
Families Citing this family (115)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
NL8701565A (en) * | 1987-07-03 | 1989-02-01 | Nedap Nv | IDENTIFICATION SYSTEM WITH TWO OPERATING MODES. |
GB8718552D0 (en) * | 1987-08-05 | 1987-09-09 | British Railways Board | Track to train communications systems |
NL8702426A (en) * | 1987-10-12 | 1989-05-01 | Nedap Nv | METHOD AND APPARATUS FOR IDENTIFYING METAL PALLETS AND CONTAINERS. |
FR2623311B1 (en) * | 1987-11-18 | 1991-05-17 | Izadnegahdar Ali | IDENTIFICATION SYSTEM WITH CONTACTLESS QUERYING OF AN ELECTRONIC LABEL |
DE8807283U1 (en) * | 1988-06-03 | 1989-10-05 | Veit Transpo GmbH, 8910 Landsberg | Mode of Transport |
GB8818521D0 (en) * | 1988-08-04 | 1988-09-07 | Du Pont Uk | Heat fusion pipe fitting system |
FR2635809B1 (en) * | 1988-08-24 | 1990-11-23 | Samokine Georges | SYSTEM FOR EXCHANGING INFORMATION BETWEEN A PORTABLE OBJECT SUCH AS A KEY, AND AN EXCHANGE DEVICE |
NL8803170A (en) * | 1988-12-27 | 1990-07-16 | Nedap Nv | IDENTIFICATION SYSTEM. |
DE4003410A1 (en) * | 1990-02-05 | 1991-08-08 | Anatoli Stobbe | PORTABLE FIELD PROGRAMMABLE DETECTOR TAG |
DE4007453A1 (en) * | 1990-03-09 | 1991-09-12 | Telefunken Electronic Gmbh | DEVICE FOR MONITORING OBJECTS |
US5252962A (en) * | 1990-08-03 | 1993-10-12 | Bio Medic Data Systems | System monitoring programmable implantable transponder |
AT395224B (en) * | 1990-08-23 | 1992-10-27 | Mikron Ges Fuer Integrierte Mi | CONTACTLESS, INDUCTIVE DATA TRANSFER SYSTEM |
JP3100716B2 (en) * | 1991-01-04 | 2000-10-23 | シーエスアイアール | Identification device |
WO1992017866A1 (en) * | 1991-04-03 | 1992-10-15 | Integrated Silicon Design Pty. Ltd. | Article sorting system |
FR2679358B1 (en) * | 1991-07-16 | 1994-03-18 | Commissariat A Energie Atomique | COMMUNICATION SYSTEM BETWEEN AN INTERROGATING TRANSCEIVING DEVICE AND AN ANSWERING RECEIVING DEVICE. |
EP0603279B1 (en) * | 1991-09-10 | 1999-05-12 | Integrated Silicon Design Pty. Ltd | Identification and telemetry system |
DE4130904A1 (en) † | 1991-09-17 | 1993-03-18 | Bks Gmbh | METHOD FOR CONTACTLESS ENERGY AND DATA TRANSFER |
DE4134922C1 (en) * | 1991-10-23 | 1992-12-03 | Anatoli 3013 Barsinghausen De Stobbe | |
US5257011A (en) * | 1991-12-03 | 1993-10-26 | Avid Corporation | Data altering means for multi-memory electronic identification tag |
JPH05252081A (en) * | 1992-03-06 | 1993-09-28 | Smk Corp | Method for identifying mobile station by radio wave |
NL9200618A (en) * | 1992-04-02 | 1993-11-01 | Nedap Nv | REUSABLE IDENTIFICATION CARD WITH DISTRIBUTION SYSTEM. |
FR2691275B1 (en) * | 1992-05-15 | 2003-01-10 | Matra Transp | Mobile passage detection device with passive answering machine. |
NL9201072A (en) * | 1992-06-18 | 1994-01-17 | Nedap Nv | INTEGRATED MICROWAVE / INDUCTIVE TRANSPONDER. |
DE4238167A1 (en) * | 1992-11-12 | 1994-05-19 | Licentia Gmbh | Remote monitoring system for integrated functions of complex machines - employs function operated switches and individually coded transponders connected to read-out station by Z-core cable and inductive antenna. |
NZ314269A (en) * | 1992-11-18 | 1998-01-26 | British Tech Group | Transponder identification system transmits multiple simultaneous interrogation signals |
US5450088A (en) * | 1992-11-25 | 1995-09-12 | Texas Instruments Deutschland Gmbh | Transponder arrangement |
US5423334A (en) * | 1993-02-01 | 1995-06-13 | C. R. Bard, Inc. | Implantable medical device characterization system |
US5491468A (en) * | 1993-06-24 | 1996-02-13 | Westinghouse Electric Corporation | Identification system and method with passive tag |
US5736967A (en) * | 1993-09-03 | 1998-04-07 | Kayser Ventures, Ltd. | Article-information display system using electronically controlled tags |
US5382780A (en) * | 1993-10-01 | 1995-01-17 | Duncan Industries Parking Control Systems Corp. | Portable time metering device |
US5661470A (en) * | 1994-03-04 | 1997-08-26 | Karr; Gerald S. | Object recognition system |
US5461925A (en) * | 1994-03-28 | 1995-10-31 | Redken Laboratories, Inc. | Assessment of damage in keratin fibers |
GB2288952A (en) * | 1994-04-29 | 1995-11-01 | Hughes Identification Devices | High frequency RF identificaton system using low frequency RF/ID chip |
EP0767946B1 (en) * | 1994-06-30 | 1999-01-13 | SkiData AG | Vehicle detecting device |
US5523746A (en) * | 1994-09-01 | 1996-06-04 | Gallagher; Robert R. | Identification system with a passive activator |
JPH0962816A (en) * | 1994-10-06 | 1997-03-07 | Mitsubishi Electric Corp | Non-contact ic card and non-contact ic card system including the same |
US5767792A (en) * | 1994-10-13 | 1998-06-16 | Bio Medic Data Systems Inc. | Method for calibrating a temperature sensing transponder |
US6771168B1 (en) * | 1995-04-24 | 2004-08-03 | Hap Nguyen | Automotive system to prevent carjacking |
US5874214A (en) | 1995-04-25 | 1999-02-23 | Irori | Remotely programmable matrices with memories |
US6017496A (en) | 1995-06-07 | 2000-01-25 | Irori | Matrices with memories and uses thereof |
US6329139B1 (en) | 1995-04-25 | 2001-12-11 | Discovery Partners International | Automated sorting system for matrices with memory |
US5741462A (en) * | 1995-04-25 | 1998-04-21 | Irori | Remotely programmable matrices with memories |
US6331273B1 (en) | 1995-04-25 | 2001-12-18 | Discovery Partners International | Remotely programmable matrices with memories |
US5751629A (en) * | 1995-04-25 | 1998-05-12 | Irori | Remotely programmable matrices with memories |
US6416714B1 (en) | 1995-04-25 | 2002-07-09 | Discovery Partners International, Inc. | Remotely programmable matrices with memories |
US5625341A (en) * | 1995-08-31 | 1997-04-29 | Sensormatic Electronics Corporation | Multi-bit EAS marker powered by interrogation signal in the eight MHz band |
FR2741980B1 (en) * | 1995-12-01 | 1998-01-23 | Pierre Raimbault | METHOD FOR PHASING ELECTRONIC LABELS QUERY STATION AND ELECTRONIC LABEL FOR IMPLEMENTING IT |
FR2741979B1 (en) | 1995-12-01 | 1998-01-23 | Raimbault Pierre | METHOD FOR REMOTE QUERYING STATION LABELS AND LABEL FOR IMPLEMENTING SAME |
FR2741978B1 (en) | 1995-12-01 | 1998-01-23 | Pierre Raimbault | SUPPLY AND MODULATION CIRCUIT FOR A REMOTE INTERROGEABLE LABEL |
AUPO055296A0 (en) * | 1996-06-19 | 1996-07-11 | Integrated Silicon Design Pty Ltd | Enhanced range transponder system |
US5838233A (en) * | 1996-08-16 | 1998-11-17 | Delco Electronics Corporation | Object orientation sensor device |
WO1998011504A1 (en) * | 1996-09-12 | 1998-03-19 | Fraunhofer-Gesellschaft zur Förderung der angewandten Forschung e.V. | Passive transponder |
DE19713736A1 (en) * | 1997-04-03 | 1998-10-08 | Draegerwerk Ag | Medical staff location and identification device |
DE19728069C1 (en) * | 1997-07-01 | 1999-02-11 | Acritec Gmbh | Device for measuring intraocular pressure |
DE19731035B4 (en) * | 1997-07-18 | 2004-09-02 | Anatoli Stobbe | Method for data transmission between a read / write device and a transponder |
DE19744781C2 (en) * | 1997-10-10 | 2000-03-02 | Anatoli Stobbe | Method for data transmission between a read / write device and a transponder and device for carrying out the method |
US6127929A (en) * | 1997-12-23 | 2000-10-03 | Em Microelectronic-Marin Sa | Transponder for half-duplex communication |
DE69935908T2 (en) | 1998-01-29 | 2008-01-10 | Magellan Technology Pty. Ltd., Annandale | SEND RECEIVER |
US5955951A (en) * | 1998-04-24 | 1999-09-21 | Sensormatic Electronics Corporation | Combined article surveillance and product identification system |
CA2277194A1 (en) * | 1998-08-12 | 2000-02-12 | Robert W. Spurr | A printer media supply spool adapted to allow the printer to sense type of media, and method of assembling same |
US6008727A (en) * | 1998-09-10 | 1999-12-28 | Xerox Corporation | Selectively enabled electronic tags |
US6343140B1 (en) | 1998-09-11 | 2002-01-29 | Quid Technologies Llc | Method and apparatus for shooting using biometric recognition |
US6507662B1 (en) | 1998-09-11 | 2003-01-14 | Quid Technologies Llc | Method and system for biometric recognition based on electric and/or magnetic properties |
US8228193B1 (en) * | 1998-09-14 | 2012-07-24 | Tuemer Tuemay O | Tag having a semiconductor chip and method of attachment to article |
US6072383A (en) * | 1998-11-04 | 2000-06-06 | Checkpoint Systems, Inc. | RFID tag having parallel resonant circuit for magnetically decoupling tag from its environment |
DE69929849T2 (en) | 1998-12-22 | 2006-10-26 | Eastman Kodak Co. | PRINTERS CONTAINERS FOR COLOR SUPPLIES AND RECEIVING MATERIAL WHICH ALLOW A PRINTER TO DOWNLOAD THE TYPE OF PRINTING MATERIAL PRESCRIBED IN IT AND METHOD FOR SET UP THE PRINTER AND THE RESERVOIRS |
TW522583B (en) * | 1999-03-18 | 2003-03-01 | Seiko Epson Corp | Electronic machine and control method thereof |
US6504491B1 (en) * | 1999-05-27 | 2003-01-07 | Motorola, Inc. | Simultaneous multi-data stream transmission method and apparatus |
US6644544B1 (en) | 1999-06-16 | 2003-11-11 | Eastman Kodak Company | Imaging apparatus capable of forming an image consistent with type of imaging consumable loaded therein and method of assembling the apparatus |
FR2802738A1 (en) * | 1999-12-15 | 2001-06-22 | Circe | TRANSPONDER READING DEVICE |
US6785739B1 (en) | 2000-02-23 | 2004-08-31 | Eastman Kodak Company | Data storage and retrieval playback apparatus for a still image receiver |
JP4700209B2 (en) * | 2000-03-21 | 2011-06-15 | ラディ・メディカル・システムズ・アクチェボラーグ | Passive biotelemetry |
US6527356B1 (en) | 2000-06-02 | 2003-03-04 | Eastman Kodak Company | Printer capable of forming an image on a receiver substrate according to type of receiver substrate and a method of assembling the printer |
US6356195B1 (en) * | 2000-06-15 | 2002-03-12 | Timex Group B.V. | Anti-pilferage system |
ATE438152T1 (en) * | 2000-08-24 | 2009-08-15 | Koninkl Philips Electronics Nv | IDENTIFICATION TRANSPONDER |
US6746404B2 (en) * | 2000-12-18 | 2004-06-08 | Biosense, Inc. | Method for anchoring a medical device between tissue |
US6652464B2 (en) | 2000-12-18 | 2003-11-25 | Biosense, Inc. | Intracardiac pressure monitoring method |
US6658300B2 (en) | 2000-12-18 | 2003-12-02 | Biosense, Inc. | Telemetric reader/charger device for medical sensor |
US6638231B2 (en) | 2000-12-18 | 2003-10-28 | Biosense, Inc. | Implantable telemetric medical sensor and method |
US6636769B2 (en) | 2000-12-18 | 2003-10-21 | Biosense, Inc. | Telemetric medical system and method |
US6783499B2 (en) | 2000-12-18 | 2004-08-31 | Biosense, Inc. | Anchoring mechanism for implantable telemetric medical sensor |
US7060075B2 (en) * | 2002-07-18 | 2006-06-13 | Biosense, Inc. | Distal targeting of locking screws in intramedullary nails |
US20040049733A1 (en) * | 2002-09-09 | 2004-03-11 | Eastman Kodak Company | Virtual annotation of a recording on an archival media |
US7233498B2 (en) | 2002-09-27 | 2007-06-19 | Eastman Kodak Company | Medium having data storage and communication capabilities and method for forming same |
GB2396004B (en) * | 2002-12-06 | 2006-02-22 | Optex Co Ltd | Anti-thief security sensor assembly with variable amount of emitted infrared beam |
DE10258779A1 (en) * | 2002-12-16 | 2004-07-15 | Infineon Technologies Ag | Method for contactless data transmission and use of this method |
US7109986B2 (en) * | 2003-11-19 | 2006-09-19 | Eastman Kodak Company | Illumination apparatus |
US7145464B2 (en) * | 2003-11-19 | 2006-12-05 | Eastman Kodak Company | Data collection device |
US7009494B2 (en) | 2003-11-21 | 2006-03-07 | Eastman Kodak Company | Media holder having communication capabilities |
CA2683271A1 (en) | 2004-02-20 | 2005-09-09 | Terry Clancy | System and method for authenticated detachment of product tags |
US8068027B2 (en) * | 2004-03-30 | 2011-11-29 | Hi-G-Tek Ltd. | Monitorable locking assemblies |
US7479884B1 (en) * | 2004-08-31 | 2009-01-20 | Cedar Ridge Research | System and method for monitoring objects, people, animals or places |
US8035482B2 (en) * | 2004-09-07 | 2011-10-11 | Eastman Kodak Company | System for updating a content bearing medium |
US7760073B2 (en) * | 2005-01-04 | 2010-07-20 | Battelle Memorial Institute | RFID tag modification for full depth backscatter modulation |
DE102006007262B3 (en) | 2006-02-10 | 2007-05-10 | Atmel Germany Gmbh | Wireless transmission data between a base a station and a transponder in a n RFID system uses an inductive path |
FR2901061B1 (en) * | 2006-05-12 | 2008-11-14 | Centre Nat Rech Scient | ELECTROMAGNETIC WAVE CONVERTER IN CONTINUOUS VOLTAGE |
JP2008165744A (en) * | 2006-12-07 | 2008-07-17 | Semiconductor Energy Lab Co Ltd | Semiconductor device |
DE102007060555A1 (en) * | 2007-12-13 | 2009-06-18 | Endress + Hauser Wetzer Gmbh + Co Kg | Device for transmitting electrical energy and information |
US8144014B1 (en) | 2008-02-22 | 2012-03-27 | Wg Security Products | Infrared electronic article surveillance system with dynamic passcode protection |
EP2374193A1 (en) * | 2009-01-06 | 2011-10-12 | Access Business Group International LLC | Communication across an inductive link with a dynamic load |
AU2010295352B2 (en) * | 2009-09-21 | 2014-12-04 | Checkpoint Systems, Inc. | Retail product tracking system, method, and apparatus |
US8508367B2 (en) * | 2009-09-21 | 2013-08-13 | Checkpoint Systems, Inc. | Configurable monitoring device |
JP5918146B2 (en) * | 2010-01-25 | 2016-05-18 | アクセス ビジネス グループ インターナショナル リミテッド ライアビリティ カンパニー | System and method for detecting data communication on a wireless power link |
US20120025623A1 (en) * | 2010-07-28 | 2012-02-02 | Qualcomm Incorporated | Multi-loop wireless power receive coil |
US9106269B2 (en) | 2010-12-08 | 2015-08-11 | Access Business Group International Llc | System and method for providing communications in a wireless power supply |
US20120153739A1 (en) * | 2010-12-21 | 2012-06-21 | Cooper Emily B | Range adaptation mechanism for wireless power transfer |
DE102010056031B4 (en) | 2010-12-27 | 2019-10-24 | Atmel Corp. | Passive transponder with a charging circuit and method for generating a supply voltage for a passive transponder |
TWI542174B (en) | 2011-02-07 | 2016-07-11 | 通路實業集團國際公司 | System and method of providing communications in a wireless power transfer system |
WO2013103943A1 (en) | 2012-01-08 | 2013-07-11 | Access Business Group International Llc | Interference mitigation for multiple inductive systems |
EP2919646B8 (en) | 2012-11-14 | 2019-06-12 | Vectorious Medical Technologies Ltd. | Drift compensation for implanted capacitance-based pressure transducer |
WO2014170771A1 (en) | 2013-04-18 | 2014-10-23 | Vectorious Medical Technologies Ltd. | Remotely powered sensory implant |
US10205488B2 (en) | 2013-04-18 | 2019-02-12 | Vectorious Medical Technologies Ltd. | Low-power high-accuracy clock harvesting in inductive coupling systems |
WO2016178196A2 (en) | 2015-05-07 | 2016-11-10 | Vectorious Medical Technologies Ltd. | Heart implant with septum gripper |
EP3398237B1 (en) | 2015-12-30 | 2020-12-02 | Vectorious Medical Technologies Ltd. | Power-efficient pressure-sensor implant |
ES2826948T3 (en) * | 2017-11-24 | 2021-05-19 | Bombardier Transp Gmbh | Device to receive electrical energy wirelessly |
Family Cites Families (32)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3299424A (en) * | 1965-05-07 | 1967-01-17 | Jorgen P Vinding | Interrogator-responder identification system |
US4075632A (en) * | 1974-08-27 | 1978-02-21 | The United States Of America As Represented By The United States Department Of Energy | Interrogation, and detection system |
GB1555606A (en) * | 1975-03-27 | 1979-11-14 | Stiftelsen Inst Mikrovags | Systems for the registration of objects |
JPS51150917A (en) * | 1975-06-19 | 1976-12-24 | Nippon Signal Co Ltd:The | Card data discrimination system |
JPS52150937A (en) * | 1976-06-09 | 1977-12-15 | Matsushita Electric Ind Co Ltd | Data card and its reading system |
GB1577920A (en) * | 1976-11-01 | 1980-10-29 | Nedap Nv | Detection plate for identification systems |
JPS54141598A (en) * | 1978-04-24 | 1979-11-02 | Nedaarandoshie Aparantenfuabur | Detecting plate |
US4333072A (en) * | 1979-08-06 | 1982-06-01 | International Identification Incorporated | Identification device |
SU1068051A3 (en) * | 1980-05-19 | 1984-01-15 | Таг Радионикс Лимитед (Фирма) | Device for transmitting and receiving signals |
JPS5732144A (en) * | 1980-08-06 | 1982-02-20 | Nippon Gakki Seizo Kk | Energy and/or data transmitter and receiver |
JPS5746030A (en) * | 1980-09-03 | 1982-03-16 | Mitsubishi Electric Corp | Controller for fuel injection time of engine |
FR2494935A1 (en) * | 1980-11-26 | 1982-05-28 | Saulnier Dominique | PASSIVE PROGRAMMABLE TRANSDECTOR |
US4388524A (en) * | 1981-09-16 | 1983-06-14 | Walton Charles A | Electronic identification and recognition system with code changeable reactance |
ZA829121B (en) * | 1981-12-18 | 1983-09-28 | Senelco Ltd | Transmitter/responder systems |
JPS58154082A (en) * | 1982-03-05 | 1983-09-13 | Arimura Giken Kk | Card device incorporating microcomputer |
US4473825A (en) * | 1982-03-05 | 1984-09-25 | Walton Charles A | Electronic identification system with power input-output interlock and increased capabilities |
JPS58211680A (en) * | 1982-06-03 | 1983-12-09 | Mitsubishi Electric Corp | Discriminating device for number of moving body |
NL8203092A (en) * | 1982-08-03 | 1984-03-01 | Nedap Nv | EXTREMELY PROGRAMMABLE RESPONDER. |
EP0111753A3 (en) * | 1982-11-18 | 1986-12-30 | Götting KG | Object identification arrangement |
US4546241A (en) * | 1982-12-10 | 1985-10-08 | Walton Charles A | Electronic proximity identification system |
DE3275712D1 (en) * | 1982-12-23 | 1987-04-23 | Ant Nachrichtentech | Automatic information system for mobile objects |
JPS603082A (en) * | 1983-06-18 | 1985-01-09 | Dainippon Printing Co Ltd | Ic card |
GB8332443D0 (en) * | 1983-12-06 | 1984-01-11 | Mars Inc | Tokens and handling devices |
GB8408538D0 (en) * | 1984-04-03 | 1984-05-16 | Senelco Ltd | Transmitter-responder systems |
DE3412588A1 (en) * | 1984-04-04 | 1985-10-24 | Gebhard Balluff Fabrik feinmechanischer Erzeugnisse GmbH & Co, 7303 Neuhausen | Method for data transmission and data transmission system |
DE3412610A1 (en) * | 1984-04-04 | 1985-10-17 | Gebhard Balluff Fabrik feinmechanischer Erzeugnisse GmbH & Co, 7303 Neuhausen | Method for data transmission and data transmission system |
NL8402239A (en) * | 1984-07-13 | 1986-02-03 | Paalman Berend Johan | METHOD OF MARKING ANIMALS, AND SERVING BRAND COMPONENT AND APPLICATION IMPLEMENT. |
US4654658A (en) * | 1984-08-03 | 1987-03-31 | Walton Charles A | Identification system with vector phase angle detection |
GB8420893D0 (en) * | 1984-08-16 | 1984-09-19 | Buttemer D A | Transponder |
GB2164825B (en) * | 1984-09-19 | 1988-05-11 | Satellite Video Systems Ltd | Coded transponder for indentification system |
US4818855A (en) * | 1985-01-11 | 1989-04-04 | Indala Corporation | Identification system |
JPS61283981A (en) * | 1985-06-11 | 1986-12-13 | Nippon Denzai Kogyo Kenkyusho:Kk | Integrated circuit card |
-
1986
- 1986-04-22 NL NL8601021A patent/NL8601021A/en not_active Application Discontinuation
-
1987
- 1987-04-21 NO NO871647A patent/NO871647L/en unknown
- 1987-04-21 DE DE8787200633T patent/DE3774473D1/en not_active Expired - Fee Related
- 1987-04-21 AT AT87200633T patent/ATE69517T1/en not_active IP Right Cessation
- 1987-04-21 EP EP87200633A patent/EP0242906B1/en not_active Expired - Lifetime
- 1987-04-21 ES ES198787200633T patent/ES2027276T3/en not_active Expired - Lifetime
- 1987-04-22 CA CA000535272A patent/CA1290841C/en not_active Expired - Fee Related
- 1987-04-22 AU AU71855/87A patent/AU589765B2/en not_active Ceased
- 1987-04-22 NZ NZ220034A patent/NZ220034A/en unknown
- 1987-04-22 JP JP62099605A patent/JPH0691484B2/en not_active Expired - Lifetime
- 1987-04-22 IL IL82299A patent/IL82299A0/en not_active IP Right Cessation
- 1987-04-22 DK DK205387A patent/DK205387A/en not_active Application Discontinuation
-
1990
- 1990-08-14 US US07/566,830 patent/US5105190A/en not_active Expired - Fee Related
-
1992
- 1992-12-29 JP JP4360878A patent/JPH0761032B2/en not_active Expired - Lifetime
Also Published As
Publication number | Publication date |
---|---|
AU7185587A (en) | 1987-10-29 |
EP0242906A1 (en) | 1987-10-28 |
NO871647L (en) | 1987-10-23 |
JPH05347572A (en) | 1993-12-27 |
EP0242906B1 (en) | 1991-11-13 |
ATE69517T1 (en) | 1991-11-15 |
NO871647D0 (en) | 1987-04-21 |
JPS62289023A (en) | 1987-12-15 |
DE3774473D1 (en) | 1991-12-19 |
JPH0761032B2 (en) | 1995-06-28 |
AU589765B2 (en) | 1989-10-19 |
DK205387A (en) | 1987-10-23 |
NZ220034A (en) | 1990-06-26 |
IL82299A0 (en) | 1987-10-30 |
ES2027276T3 (en) | 1992-06-01 |
CA1290841C (en) | 1991-10-15 |
DK205387D0 (en) | 1987-04-22 |
US5105190A (en) | 1992-04-14 |
JPH0691484B2 (en) | 1994-11-14 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
NL8601021A (en) | PROGRAMMABLE RESPONDER. | |
EP0438250B1 (en) | System for reading and writing data from and into remote tags | |
EP0694860B1 (en) | Apparatus and method for identifying multiple transponders | |
CA1314610C (en) | Electromagnetic identification and location system | |
US8400297B2 (en) | Power conserving active RFID label | |
US4912471A (en) | Interrogator-responder communication system | |
US4937581A (en) | Electronic identification system | |
US4870419A (en) | Electronic identification system | |
EP0605650B1 (en) | Radio frequency automatic identification system | |
US5103222A (en) | Electronic identification system | |
EP1084423B1 (en) | Radio frequency identification tag device with sensor input | |
US5132687A (en) | Electronic identification system | |
CN1965246A (en) | Wireless monitoring device | |
EP0299557B1 (en) | Identification system for stock farms | |
WO2002073525A1 (en) | Multi-level rf identification system | |
US8816826B2 (en) | Passive radio frequency data logger | |
CA2128432A1 (en) | Method and device for electronic identification | |
US20080042803A1 (en) | Adjusting signal strength used to detect tags | |
NZ199520A (en) | Livestock identification:implanted transponder | |
US6696028B2 (en) | Biological analysis system comprising a means for controlling the link between a biological analysis device and a complementary receptacle | |
EP0178924A2 (en) | Electronic identification system | |
RU2137161C1 (en) | Data carrier for identification of objects and method of control over it | |
US20100060430A1 (en) | Enhanced RFID Output Control | |
WO1997012258A1 (en) | Transponder containing measuring circuit | |
WO2002072452A2 (en) | Conveyer belts |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
A1B | A search report has been drawn up | ||
BV | The patent application has lapsed |